4
• REMEMBER
Self-monitoring of blood pressure levels does not imply establishing
diagnosis and modification of treatment prescribed by a doctor. Consult
your doctor if pressure values are outside the normal range. The treatment
regimen can be changed (dosage modification or drug replacement) only
after agreement with your doctor.
• Do not consider the pulse frequency readings as reference values when
heart pacemaker is used.
ELECTROMAGNETIC INTERFERENCE
The device contains sensitive electronic components (Microcomputer). Therefore,
avoid strong electrical or electromagnetic fields in the direct vicinity of the device
(e.g. mobile telephones, microwave cookers). These can lead to temporary impair-
ment of the measuring accuracy.
2 IMPORTANT INFORMATION
ON THE SUBJECT OF BLOOD PRESSURE
AND ITS MEASUREMENT
2.1. CAUSES AFFECTING THE BLOOD PRESSURE LEVEL
The blood pressure level is regulated by a specific region of the brain – vaso-
motor center. The blood pressure change is subject to the heart force and
rate as well as the tone and lumen of blood vessels. Relaxation of the unstri-
ated muscles of the blood vessel walls results in pressure reduction due to the
expansion of the lumen of blood vessels.
The blood pressure level changes periodically during cardiac activity: the maxi-
mum value (systolic blood pressure value) is observed in the period of blood
ejection out of the heart ventricles (systole), the minimum value (diastolic blood
pressure value) is observed at the end of the relaxation period (diastole).
The blood pressure values must lie within normal ranges to prevent critical
condition of health.
2.2. WHICH VALUES ARE NORMAL?
The blood pressure is considered to be elevated, if at rest the diastolic pres-
sure level is 90 mmHg or above and/or the systolic pressure level is above
140 mmHg. In this case, please consult your doctor. Maintenance of such pres-
sure levels for a long period of time pose risk to health.
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